Bobbin-winder for sewing-machines.



H. W. CORNING.

BOBBIN WINDER FOR SEWING MACHINES,

APPLICATION FILED OCT. 1' 1915.

Patented Mai. 21

WITNESS ATTORNEY RAP" co.. WASHINGTON/D. c.

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HENRY W. GOR-NING, OF CLEVELAND, OHIO, ASSIGNOR TO THE STANDARD SEWING MACHTNE COMPANY, OF CLEVELAND, OHIO, CORPORATION OF OHIO.

BOBBIN-WINDER FOR SEWING-MACHINES.

Application filed October 1, 1915.

To all whom it may concern:

Be it known that I, HENRY TV. Connmo, a citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Bobbin-Vinders for Sewing-Machines, of which the following is a specification.

My invention relates to that class of sewing machine bobbin-winders which are supported upon the vertical arm of the mach ne adjacent the machine drlve belt. and wh ch comprise a rotatable bobbin-carrying spindle, a pivoted carrier for said spindle adapted for movement to and from an operative position with the spindle in driving engagement with the machine belt, and a lever operated by the accumulating thread on the bobbin having means for holding the spindle carrierrin operative position during the winding of the bobbin and automatically releasing the same from such position when a predetermined amount of thread has accumulated on the bobbin.-

The object of my invention is to simplify and render more eflicient bobbin-winders of this class, which object I attain by means of the novel construction and combination of parts hereinafter set forth in detail and more particularly pointed out in the appended claims.

Referring now to the accompanying drawings forming part of this specification, Figure 1 is a front elevation of the rear end of a sewing machine provided with a bobbinwinder embodying my invention. Fig. 2 is a section taken on the line 2-2 of Fig. 1', looking in the direction indicated by the arrows. Figs. 3 and 4 are enlarged views of the bobbin-winder detached from the machine and showing the same in operative and inoperative positions, respectively, relative to the drive belt. Fig. 5 is a detail showing the connection between certain of the parts at that side thereof opposite the side shown in Figs. 3 and 4.

Similar reference characters indicate like parts in the several views of the drawings.

The part of a sewing machine here shown in connection with my improved bobbinwinder, comprises the arm 2, the drive pulley 3, and the drive belt 4. The'bobbinwinder is adapted for detachable connection with the arm 2 and comprises a bracket arm 5 for the support of the other parts of Specification of Letters Patent.

device, such as the screw 6.

Patentedltllar. 21, 1916.

Serial No. 53,531.

the device, which arm is attached tothe machine arm 2 by means of a suitable fastening Adjacent the outer end of this bracket arm is pivoted, at 7, a frame 8 having at its upper end a horizontally arranged bearing 9 in which is journaled a spindle 10, which latter. is provided at one end with an attached pulley 11 for engagement with the drive belt i and at its other end is adapted to carry a removable bobbin, such as 12.

The pivoted frame 8, which constitutes a carrier for the rotatable bobbin spindle 10, is maintained in its normal operative position by means of a lever 13 pivoted to the bracket arm at 14: and having an arm 15 engaging a projection 16 on one side of the frame 8, as shown. This lever 13 is also pro vided with a second arm 13 adapted for engagement with the accumulating thread on the bobbin whereby the lever will be moved or operated thereby.

As a means to hold the frame 8 in an operative position with the spindle 10, through its pulley 11, in driving engagement with the belt 3, the arm 15 of the lever 13 is provided with a cam surface 17 which engages the projection 16 on the spindle carrier and holds the parts in their said operative posi tion, as shown in Figs. 2 and 3. The formation of this cam 17 is such as to maintain holding engagement with the projection 16 during the upward swinging movement of the lever as caused by the accumulating thread on the bobbin and until the desired predetermined amount of thread has been accumulated, at which time the cam 17 will have been moved to a position to disengage from the projection 16 and thereby automatically release the spindle carrier from its operative position with the spindle pulley in driving engagement with the drive belt. WVhen the spindle carrier is so released, it will be held in its inoperative position as shown in Fig. 4 by the engagement of the projection 16 with a stop surface 18 on the lever 13, as shown.

As a means to hold the lever 13 and the spindle carrier 8 is cooperative relation and cause the spindle carrier to swing backward to its inoperative position upon being released by the lever, I mount a coiled spring 19 upon the pivot 14 with one end engaging an arm 20 of the lever 13 to move the latter in a direction toward the spindle, and with the other'end engaging an ear 21 on the spindle carrier to move the latter in a diative position during the winding of the bobbin and to automatically release the same from such position upon the accumulation of a predetermined amount of thread on the bobbin, and a single spring engaging both the spindle carrier and the lever and maintaining the same in cooperative relation.

2. In combination with a sewing machine and driver, a bobbin-winder comprising a support, a rotatable bobbin-spindle, acarrier for said spindle movable to and from an operative position with the spindle in driving relation with the driver, a lever operated by the accumulating thread on the bobbin having cam and stop surfaces, the cam surface holding the spindle carrier in its said operative position during the winding of the bobbin and automatically releasing the same from such position upon the ac: cumulation of a predetermined amount of thread on the bobbin, and the stop surface release by the cam and holding the same in its lnoperative position, and a singlespring engaging both the spindlecarrlerand the lever and maintaining the same in coopera-,

tive relation.

Signed at Cleveland, in the county Cuyahoga, and State of Ohio.

HENRY W. CORNING'.

Witnesses CHAS. C. EMMONS, J. H. WHITE.

' engaging the spindle carrier following its 7 Copies of this patent may be obtained for five cents each, by, addressing the Commissioner of Patents, v

' Washington, D. G. 

